MT8931BE Mitel, MT8931BE Datasheet
MT8931BE
Manufacturer Part Number
MT8931BE
Description
Subscriber Network Interface Circuit
Manufacturer
Mitel
Datasheet
1.MT8931BE.pdf
(3 pages)
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Part Number:
MT8931BE
Manufacturer:
MITEL
Quantity:
20 000
Features
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Applications
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STAR/Rsto
XTAL2/NC
XTAL1/NT
CCITT I.430 and ANSI T1.605 S/T interface
Full-duplex 2B+D, 192 kbit/s transmission
Link activation/deactivation
D-channel access contention resolution
Point-to-point, point-to-multipoint and star
configurations
Master (NT)/Slave (TE) modes of operation
Exceeds loop length requirements
Complete loopback testing capabilities
On chip HDLC D-channel protocoller
8 bit Motorola/Intel microprocessor interface
Microprocessor-controlled operation
Mitel ST-BUS interface
Low power CMOS technology
Single 5 volt power supply
ISDN NT1
ISDN S or T interface
ISDN Terminal Adaptor (TA)
Digital sets (TE1) - 4 wire ISDN interface
Digital PABXs, Digital Line Cards (NT2)
DSTo
F0od
DSTi
C4b
F0b
Rsti
Interface
ST-BUS
Control
Timing
and
HALF
Figure 1 - Functional Block Diagram
AD0-7
PLL
R/W/WR
D-channel Priority
Mechanism
CMOS ST-BUS
Microprocessor Interface
Subscriber Network Interface Circuit
Description
The MT8931B Subscriber Network Interface Circuit
(SNIC)
T1.605 Recommendations for the ISDN S and T
reference points. Providing point-to-point and point-
to-multipoint digital transmission, the SNIC may be
used at either end of the subscriber line (NT or TE).
An HDLC D-channel protocoller is included and
controlled through a Motorola/Intel microprocessor
port.
The MT8931B is fabricated in Mitel’s CMOS process.
DS/RD
Transceiver
HDLC
MT8931BC
MT8931BE
MT8931BP
implements the CCITT I.430 and ANSI
AS/ALE
Ordering Information
-40 C to +85 C
Preliminary Information
FAMILY
28 Pin Ceramic DIP
28 Pin Plastic DIP
44 Pin PLCC
ISSUE 2
CS
Activation
Controller
Interface
S-Bus
Link
Link
IRQ/NDA
MT8931B
August 1993
LTx
VBias
LRx
VDD
VSS
10-71
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MT8931BE Summary of contents
Page 1
... Control XTAL1/NT XTAL2/NC Rsti HALF CMOS ST-BUS Subscriber Network Interface Circuit MT8931BC MT8931BE MT8931BP Description The MT8931B Subscriber Network Interface Circuit (SNIC) implements the CCITT I.430 and ANSI T1.605 Recommendations for the ISDN S and T reference points. Providing point-to-point and point- to-multipoint digital transmission, the SNIC may be used at either end of the subscriber line (NT or TE) ...
Page 2
MT8931B Notes: 10-72 Preliminary Information ...
Page 3
North America - West Coast Tel: (858) 675-3400 Fax: (858) 675-3450 Tel: +65 333 6193 Fax: +65 333 6192 Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries (collectively “Zarlink”) ...